Analog Representations in Digital Arithmetic: A Review
Behrooz Parhami · 2018 52nd Asilomar Conference on Signals, Systems, and Computers · 2018
After decades of being overshadowed by digital systems, analog computing is back in the spotlight, given its speed and energy economy and the proliferation of compute-intensive applications that do not require high precision. While pure analog processing has quite a few niche uses, hybrid digital/analog schemes satisfy the needs of many more application domains. In this paper, we review number representation schemes that are based on the analog encoding of numeric values in an otherwise digital arithmetic system, showing them to be closer than ever to practical realizability. We also point to several possible extensions and generalizations of the proposed schemes.